diff --git a/tryton/modules/account/move.py b/tryton/modules/account/move.py
index 35be14cf1f..123755b2e9 100644
--- a/tryton/modules/account/move.py
+++ b/tryton/modules/account/move.py
@@ -1368,6 +1368,8 @@ class Line(MoveLineMixin, ModelSQL, ModelView):

         reconciliations = []
         for lines in lines_list:
+            if not lines:
+                continue
             for line in lines:
                 if line.reconciliation:
                     raise AccessError(